Yeah I ignored the nonsense about living human being. We can't know about living human beings. That is not for us to know.
Can you name anyone elect? Name one living soul on earth holier than you?
Well if you claim not to know how can you be sure anyone is vessel for destruction?
John 13
34“A new commandment I give to you, that you love one another, even as I have loved you, that you also love one another.
35“By this all men will know that you are My disciples, if you have love for one another.”
1 John 3
10By this the children of God and the children of the devil are obvious: anyone who does not practice righteousness is not of God, nor the one who does not love his brother.
2 John 1
4I was very glad to find some of your children walking in truth, just as we have received commandment to do from the Father. 5Now I ask you, lady, not as though I were writing to you a new commandment, but the one which we have had from the beginning, that we love one another. 6And this is love, that we walk according to His commandments. This is the commandment, just as you have heard from the beginning, that you should walk in it.
7For many deceivers have gone out into the world, those who do not acknowledge Jesus Christ as coming in the flesh. This is the deceiver and the antichrist. 8Watch yourselves, that you do not lose what we have accomplished, but that you may receive a full reward. 9Anyone who goes too far and does not abide in the teaching of Christ, does not have God; the one who abides in the teaching, he has both the Father and the Son. 10If anyone comes to you and does not bring this teaching, do not receive him into your house, and do not give him a greeting; 11for the one who gives him a greeting participates in his evil deeds.
If a stranger , a child asked does God love them? There is only one group of people who going to shrug and not know.
If God gives a universal command to NOT SIN, There is only one group of people who don't know what God wants for everyone.